Method of roll pressure bonding stripes to a substrate

ABSTRACT

The application describes a method and apparatus for roll pressure bonding a plurality of stripes to a substrate. Through unique roll arrangements and designs, stripes of controllable thickness are produced, as conditions which cause non-uniform roll pressures are eliminated. Furthermore, these unique roll arrangements and designs protect the substrate in the areas between the stripes from surface damage such as roll scratching. Additionally, novel means are provided which both guide and heat the materials.

United States Patent 1 1 Kozak et a1. 45 N 6, 1973 METHOD OF ROLLPRESSURE BONDING 3,423,573 1/1969 Richards et a1 219/470 x STRIPES To ASUBSTRATE 3,408,727 11/1968 Dion 29/498 X 3,201,862 8/1965 Gotoh29/47l.1 X Inventors: Larry Kozak, Tarentum; 2,782,497 2/1957Campbell..... 29/4975 x Raymond L. Southern, Lower 2,722,735 11/1955Beamish 228/5 X Burrell, bOth Of Pa. 3,195,332 7/1965 Ranauto 72/236[73] Assignee: Allegheny Ludlum Industries, Inc.,

Pittsburgh, p Primary Examiner-.1. Spencer Overholser [22] Filed: June11, 1971 Assistant ExaminerRobert J. Craig AttorneyRichard A. Speer etal. [21] Appl. N0.: 152,319

Related [1.8. Application Data 57 ABSTRACT [62] 5 23 5 1? May 1969 Theapplication describes a method and apparatus for I roll pressure bondinga plurality of stripes to a sub- 52 us. c1 29/471.1, 29/4975, 156/178, fThmugh unique 9" arrangements and designs 156/302, 228/4 228/5 str pesof controllable thickness are produced, as con- 511 Int. Cl 8231i 31/02wh'ch cause 1" Pressures are [58] Field of Search 228/4 5 6 44-elimmaed' Furthermme' these arrange 29/47] .1 471.3 4975 h ments anddesigns protect the substrate in the areas be- 156/l78 302 553 580 tweenthe stripes from surface damage such as roll scratching. Additionally,novel means are provided [56] References Cited which both guide and heatthe materials.

UNITED STATES PATENTS Morey 228/5 13 Claims, 8 Drawing FiguresPAIENIEDnuv a 1913 3,769,687 SHEET 10F 4 INVENTORS. RA YMOND L. SOUTHER/V 8 LARRY M. KOZAK Ar farney PATENTEUHBV 6:973 3,769,687

' sum 20F 4 r I i ,,/6 l I v I I I I 7 i'"" L 1 l l /5 l5 INVENTORS.

RAYMOND L. SOUTHERN 8 LARRY M. KOZAK Attorney PATENTEDuuv SL9733.769.687"

SHEET 30F 4 I/V VEN TORS. RA YMONO L. SOUTHERN '8 LARRY M. KOZAK Alarney METHOD OF ROLL PRESSURE BONDING STRIPES TO A SUBSTRATE Thisapplication is a division of copending application Ser. No. 824,205,filed May 13, 1969, which was issued on Jan. 4, 1972 as US. Pat. No.3,632,043.

This application relates to a method and apparatus for pressure bondinga first material to a second material and more particularly to a methodand apparatus for pressure bonding a plurality of spaced apart stripesto a substrate.

Roll bonding of composite members is widely accepted today. Cookware isoften made from composite aluminum-stainless steel stock. Aluminumoffers excellent heat transfer characteristics but is susceptible tostaining and difficult to clean. On the other hand stainless steel doesnot have the heat transfer characteristics of aluminum but can easily becleaned and is resistant to stain. Titanium-aluminum composites are alsomade since they provide a stock material which has an outer surface oftitanium with its inherent strength and corrosion resistance and a coreof less expensive aluminum. More recently, stainless steel substrateshave been pressure bonded to metal more anodic than carbon steel so asto produce composite stock suitable for fabrication into automotive andother decorative trim members.

Stainless steel is ideally suited for automotive trim as it has a brightlustrous surface and is stain resistant to a veriety of contaminants.However, since most automotive bodies are constructed of carbon steel,the use of stainless steel can result in galvanic corrosion. Carhonsteel is anodic to stainless steel and galvanically corrodes in thevicinity of the stainless steel trim in the presence of an electrolyte,such as moisture.

To protect the carbon steel it has been the practice to coat stainlesssteel with a non-ferrous sacrificial metal which is electrochemicallyanodic to mild carbon steel prior to forming the stainless into trimmembers. The sacrificial metal is applied to those sections which willeventually contact the automotive body, i.e. the return flange of thefabricated trim members. This generally encompasses the bonding ofsacrificial metal to the upper planar surfaces of stainless substratesalong their edges and atregular intervals thereacross, thereby producing stripes of sacrificial metal at each edge and across the surface.The stripes across the surfaces are twice the width of the edge stripesand are slit along their longitudinal axis so as to produce stripes ofstainless steel of a desired width with sacrificial stripes at eachedge, suitable for fabrication into automotive trim members.

The presently preferred method for coating the stainless substrate isroll pressure bonding. Although roll bonding equipment has been used inthe past for producing composite members, e.g. cookware, a roll bonderwhich could satisfactorily bond a plurality of uniformly thick spacedapart stripes to a substrate had not existed until the presentinvention. Conventional roll bonders comprise an upper work roll and alower work roll. They are subject to barrelling, a condition caused byheat concentration gradients within the roll and/or deflectionconcavity," a condition caused by pressure differentials.

Heated sheets passing through a roll transfer heat to the roll.Unfortunately the heat is not uniformly distributed throughout the rolland concentrates in the center.

As a result the center of the roll expands to a greater degree than doesthe ends, thereby assuming the shape of a barrel; a shape adverse toquality bonding as it causes the central material, e.g. center stripesof sacrificial metal, to be over rolled and compressed to a greaterextent than the end material, e.g. edge stripes of sacrificial metal.Like barreling" the phenomenon of deflection concavity" is alsodisadvantageous. It is caused by uneven pressure loads which cause theroll surface to be concave in the bonding zone. Over rolling of the endmaterial is characteristic of it.

Our invention teaches a method and apparatus for producing roll bondedstripes of controllable thickness by providing controllable pressure tothe widths of material which form the stripes after bonding. We havethree preferred embodiments for carrying out the invention, all of whichsubstantially eliminate the adverse effects of barreling. They comprise:(l) a flexible work roll with a plurality of spaced apart backup rolls;

(2) a relieved ring work roll; and (3) a plurality of work rolls. Inaddition to the substantial elimination of barreling the first and thirdembodiments substantially eliminate the adverse effects ofdeflectionconcavity," All the embodiments have the advantage of substantiallyeliminating the problem of scratching substrate metal in the areabetween bonded stripes. This is very important as this area becomes theexposure surface of stainless steel automotive trim members. A furtherfeature of this invention is a novel means which performs the dualfunctions of guiding and heating the materials which form the compositestock.

It is accordingly an object of this invention to provide novel apparatusfor roll pressure bonding.

It is another object of this invention to provide a novel method forroll pressure bonding.

It is another object of this invention to provide a novel apparatus foruniformly roll pressure bonding a plurality of spaced apart stripes to asubstrate.

It is another object of this invention to provide a novel method foruniformly roll pressure bonding a plurality of spaced apart stripes to asubstrate.

It is another object of this invention to provide novel means for bothheating and guiding material to be hot rolled pressed.

It is a further object of this invention to provide a novel method forboth heating and guiding material to be hot rolled pressed.

The foregoing and other objects of the invention will be best understoodfrom the following description, reference being had to the accompanyingdrawings wherein:

FIG. 1 is a schematic side view of one possible arrangement for theapparatus of this invention;

FIG. 2 is a partial end elevational view looking at the rolls where thebonded material exits therefrom, a portion of which is sectional,showing one of the roll pressure bonding embodiments of this invention;

FIG. 3 is a partial side elevational view taken substantially along lineIII-III of FIG. 2, a portion of which is sectional, showing the rollarrangement embodiment of FIG. 2;

FIG. 4 is a side view of the lifter spring mechanism for the work rollof the roll arrangement embodiment of FIGS. 2 and 3;

FIG. 5 is an end view of the bracket which holds the lifter springmechanism of FIG. 4;

FIG. 6 is a partial end elevational view looking at the rolls where thebonded material exits therefrom, showing a second roll pressure bondingembodiment of this invention;

FIG. 7 is a partial end elevational view looking at the rolls where thebonded material exits therefrom, showing a third roll pressure bondingembodiment of this invention;

FIG. 8 is a sectional view of a means for both heating and guidingmaterial.

We refer now to the drawings for a description of the apparatus andmethod of this invention. Since a primary use for the invention is themanufacture of sacrificial coated stainless steel automotive trim, thefollowing discussions and examples are directed to this embodiment. Aspointed out earlier, the sacrificial metal is one which is anodic tomild carbon steel. Typical sacrificial metals are aluminum, zinc,cadmium, magnesium and base alloys and mixutres thereof. They can besupplied in a variety of widths in the form of wire, sheet, foil orpowder. At the present time aluminum wire is preferred.

FIG. 1 is a schematic side view of one possible arrangement for theapparatus of this invention. It comprises a coil 1 of stainless steel,adapted to be supplied from any conventional uncoiler, a plurality ofspools 2 of aluminum wire (only one of which is shown), also adapted tobe supplied by suitable uncoiling means, a first guide means 3 and asecond guide means 4 for the wire, radiant heaters 5 for bringing thestainless to desired temperature, a strip guide 6 for the stainlesssteel, a spray head 7 and a rolling stand 10. Rolling stand 10 comprisesa top work roll 11 and a bottom work roll 12 which are designed andarranged in a manner so as to bond a plurality of controllably thickaluminum stripes to the stainless. The details of the arrangements anddesigns are discussed below. Guide rolls and means 3, 4

and 6 are arranged in a purely exemplary manner which should in no waybe construed as limiting. For example, they can be replaced by suitablesupplying means which serve the dual functions of supplying and guiding.The radiant heaters 5 are also exemplary and can be replaced by otherwell-known conventional heating means, e.g. induction furnaces andresistance heating means. Furthermore, there are instances when a coldpressure bond is desired and hence no need for heating means. Heating ofthe sacrificial aluminum wire does not require heating means even whenhot roll bonds are formed, as it can be heated by conduction, i.e. bybringing it into contact with the heated stainless steel, since thealuminum is of a relatively small mass in comparison to the stainless.An alternative heating method for the aluminum is a heated guide roll,shown in FIG. 8 and described below. Spray head 7 issues a releaseagent, e.g. a fine mist of water mixed with lubricants or minerals,through air atomizing nozzles. The purpose of spraying is to prevent thewire from being seized by the upper work roll and not for lubricity orcooling. The impurities in the water, e.g. oil or silicone, deposits avery thin film on the surface of the roll as the water evaporates. Thissurface film fills in the surface pits ofthc roll and prevents thealuminum from getting caught in them. Of course, spraying can bereplaced by other means for applying release agents, e.g. brushes androlls. It is also possible to apply the release agent by hand, e.g.rubbing.

A preferred roll arrangement and design for producing uniform stripes ofsacrificial metal is shown in FIGS. 2 through 5. FIG. 2 is a partial endelevational view of an embodiment of roll stand 10, a portion of whichis in section. It comprises roll stand frame 20, upper work roll 11',lower work roll 12', a plurality of backup rolls 13 seated in housings23, an upper work roll shaft 14 seated in thrust bearings 15 (FIG. 5),chocks 16 enclosing thrust bearings 15, brackets 25 connecting chocks 16to the roll stand frame 20 through work roll lifter springs 17, andpressure cylinders 18 for raising and lowering backup rollers 13 throughplungers 19, backup roll movers 21, rocker arms 22 and additional partsshown in FIG. 3 and described below. Upper work roll 11' is flexible andis straddled by a plurality of backup rolls 13 (see FIG. 3 which showsthe straddling) spaced apart so as to distribute uniform pressure to themetal which forms the sacrificial stripes. It is small enough so that itwill bend rather than over-roll any section. For the production ofaluminum coated stainless steel automotive trim, the flexible upper workroll is generally no greater than 3 inches providing it is solid. Hollowflexible rolls can be larger. Their sectional moment of inertia,however, should be no greater than that for the largest useable solidroll. Rolls larger than 3 inches could be employed to bond metal wiresharder than aluminum.

FIG. 3 is a partial side elevational view, a portion of which is insection, of the roll stand embodiment of FIG. 2, showing one particularmeans for raising and lowering the backup rolls 13. It compriseshydraulic pressures cylinders 18 connected to rocker arms 24 throughpivots 25 about which rocker arms 24 turn, pivots 26 also about whichrocker arms 24 turn, a backup roller mover 21 which raises and lowersplunger 19 through rocker arm 22, and a housing 23 which holds backuprollers 13 and moves with connected plunger 19. When pressure cylinders18 push upward, rocker arms 24 revolve, thereby lowering plungers l9 andbackup rolls 13. Conversely, when pressure cylinders 18 push down,rocker arms 24 revolve in the opposite directions, thereby raisingplungers l9 and backup rolls 13. Although the exemplary means describedin this paragraph for raising and lowering the backup rolls 13 show aset of straddle rolls in the same horizontal plane, it is within thescope of this invention to use sets of offset straddled backup rolls,e.g. every other backup roll could be removed alternately side to sideto use a plurality of sets of straddled rolls having in excess of tworolls each and to replace the plurality of sets of straddled backuprolls with a plurality of non-straddling backup rolls.

When backup rolls 13 are raised work roll 11 is also raised. This isaccomplished by work roll lifter springs 17 and brackets 25 which areattached to roll stand frame 20. The operation of lifter springs 17 isbest described in conjunction with FIG. 4 and 5. FIG. 4 shows a sideview of the lifter spring mechanism and FIG. 5 shows an end view of thebracket which holds the lifter spring mechanism. Comprising FIG. 4 arelifter spring 17 connected to bracket 25 at one end and to chock 16 atthe other end and track 27 cut from bracket 25 upon which chock 16slides up and down. FIG. 5 comprises bracket 25, chock l6, thrustbearing 15 within chock 16 and upper work roll shaft 14 within thrustbearing 15. When the backup rolls l3 relieve the pressure upon the upperwork roll 11', it is pulled up by chocks l6 which are in turn pulled upby work roll lifter springs 17 while chocks l6 slide on tracks 27. Likethe apparatus for raising and lowering the backup rolls the apparatusfor raising the upper work roll as described in this paragraph and asshown in FIGS. 4 and 5 is only exemplary and should in no way beconstrued as limiting.

Placing the apparatus as shown in FIGS. 1 through 5 into operation is asfollows. Spools of aluminum wire are placed in position as is a coil ofstainless steel. The aluminum wires are then threaded over the firstguide 3, under the second guide 4, and between upper work roll 11' andlower work roll 12. Upper work roll 11 is in its raised position held bychocks 16 which are in turn held by lifter springs 17. At the same timethe stainless steel is passed through unenergized radiant heaters 5,strip guide 6 and between upper work roll 11' and lower work roll 12.The aluminum wires and stainless steel are then placed on a coiler (notshown). Subsequently, backup rolls 13 are lowered as described earlier,thereby also lowering upper work roll 11' so as to arrange it and lowerwork roll 12' in their bonding position. Radiant heaters 5 are nextenergized to heat the stainless steel to a preferred bondingtemperature, i.e. a temperature of at least 375 F. The aluminum israised to a preferred bonding temperature, i.e. a temperature of atleast 140 F. by heat transferred from the stainless steel ash is broughtinto contact with the heated stainless steel prior to entry into the nipof the rolls. Power is then supplied to drive the coiler which acts asthe driving force withdrawing stainless steel sheets through the rollwith spaced apart uniform stripes of aluminum bonded thereto. As analternative, one or more work rolls may be driven instead of the coiler.

A second embodiment of this invention eliminates barreling" through aplurality of upper work rolls and both barreling and deflectionconcavity" through a plurality of upper work rolls, each having theirown pressure supplying means. FIG. 6 shows an example of thisembodiment. It comprises a plurality of upper work rolls 1]", aplurality of hydraulic pressure cylinders 30 connected to the upper workrolls 11" through a plurality of housings 38, a plurality of saddles 31connected to the hydraulic cylinders 30, an arbor 32 seated withinsaddles 31 holding the upper work rolls 11" in place against a lowerwork roll 12" through the saddles 31, hydraulic pressure cylinders 30and housings 38, inverted worm gear screw jacks 33 for raising andlowering the arbor 32 and a hand wheel 36 connected to the jacks throughshafts 34 couplings 35 and shaft 37; As was the case for the firstembodiment, modifications and changes of the structure shown in FIG. 6are well within the scope of this invention. For example, the pluralityof hydraulic cylinders could be replaced by a plurality of springs orweights or eliminated entirely.

FIG. 7 shows a third embodiment of this invention. It comprises arelieved ring upper work roll 11" and a lower work roll 12". Relievedring roll 11" comprises rings 40 arranged so as to conform to the wiresbeing bonded, spacers 41 and locking collars 42 to hold the rings inplace through set screws (not shown). This embodiment workssatisfactorily with the bottom roll as is shown in FIG. 7 but it hasbeen found preferably to use two relieved ring rolls. When two relievedring rolls are used the rings on the bottom roll are generally widerthan those on the top as they do not have to conform to .the wires. Thisthird embodiment can be made operable by removing the plurality of upperwork rolls, the hydraulic pressure cylinders and the saddles shown inFIG. 6 and by replacing the arbor with the ring relieved roll shown inFIG. 7. It is an additionally advantageous embodiment as is the secondembodiment since it is adaptable to a bonding process wherein thealuminum is embedded into the stainless. This advantage is made possibleby the high concentration of pressure obtainable at the bonding surfaceof the ring.

Earlier it was disclosed that one of the objects of this invention wasto provide a novel method and apparatus for heating the material to bebonded. This is accomplished by a guide means which performs the dualfunctions of guiding and heating. FIG. 8 shows such a guide means in theform of a roll suitable for guiding wires. This concept'is, however,adaptable to sliding guide means and guide means suitable for otherforms of material, e.g. foil. The guide means as shown in FIG. 8comprises a stationary journal tube. 50 surrounding a heating element51, self-lubricating bearings 52 and wire guide groove blocks 53surrounding journal tube 50 and locking collars 54 for holdingself-lubricating bearings 52 and guide groove blocks 53 in place bymeans of set screws 55.

From the above paragraphs it will be apparent to those skilled in theart that the novel principles of the invention disclosed herein inconnection with specific examples thereof will suggest various othermodifications and applications of the same. It is accordingly desiredthat in construing the breadth of the appended claims they should not belimited to the specific examples described herein.

We claim:

1. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; heatingsaid substrate; guiding said plurality of spaced apart widths ofstriping material to a point of surface-to-surface contact with saidsubstrate; and conjointly passing said plurality of spaced apart widthsof striping material and said heated substrate through a nip defined bythe roll complex of a roll pressure bonder and applying sufficientpressure at least at a plurality of areas across the width of saidsubstrate corresponding to spacings be tween the spaced apart widths ofstriping material to effect bonding between each of said plurality ofspaced apart widths of striping material and said substrate.

2. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; heating said plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of heated spaced apart widths of striping material andsaid substrate through a nip defined by the roll complex of a rollpressure bonder and applying sufficient pressure at least at a pluralityof areas across the width of said substrate corresponding to spacingsbetween the spaced apart widths of striping material to effect bondingbetween each of said plurality of spaced apart widths of stripingmaterial and said substrate.

3. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate;simultaneously heating and guiding said plurality of spaced apart widthsof striping material with a heating guide means to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of heated spaced apart widths of striping material andsaid substrate through a nip defined by the roll complex of a rollpressure bonder and applying sufficient pressure at least at a pluralityof areas across the width of said substrate corresponding to spacingsbetween the spaced apart widths of striping material to effect bondingbetween each of said plurality of spaced apart widths of stripingmaterial and said substrate.

4. A method according to claim 3 wherein said plurality of spaced apartwidths of striping material are simultaneously guided and heated with aheated guide roll.

5. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by alower work roll which contacts said substrate at least at a plurality ofareas throughout its width, an upper, flexible work roll which contactssaid plurality of spaced apart widths of striping material and aplurality of spaced apart backup rolls in contact with said upper workroll at spaced apart areas throughout its width; and applying sufficientpressure with said roll pressure bonder at least at a plurality of areasacross the width of said substrate corresponding to spacings between thespaced apart widths of striping material to effect bonding between eachof said plurality of spaced apart widths of striping material and saidsubstrate.

6. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by alower work roll which contacts said substrate at least at a plurality ofareas throughout its width, an upper, flexible work roll 'which contactssaid plurality of spaced apart widths of striping material and aplurality of spaced apart sets of backup rolls which straddle said upperwork roll at spaced apart areas throughout its width; and applyingsufficient pressure with said roll pressure bonder at least at aplurality of areas across the width of said substrate corresponding tospacings between the spaced apart widths of striping material to effectbonding between each of said plurality of spaced apart widths ofstriping material and said substrate.

7. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by alower work roll which contacts said substrate and a relieved ring upperwork roll which contacts said plurality of spaced apart widths ofstriping material; and applying sufficient pressure at least at aplurality of areas across the width of said substrate corresponding tospacings between the spaced apart widths of striping material to effectbonding between each of said plurality of spaced apart widths ofstriping material and said substrate.

8. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by arelieved ring lower work roll which contacts said substrate and arelieved ring upper work roll which contacts said plurality of spacedapart widths of striping material; and applying sufficient pressure atleast at a plurality of areas across the width of said substratecorresponding to spacings between the spaced apart widths of stripingmaterial to effect bonding between each of said plurality of spacedapart widths of striping material and said substrate.

, 9. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of strip ing material; supplying a substrate;guiding said plurality of spaced apart widths of striping material to apoint of surface-to-surface contact with said substrate; and

conjointly passing said plurality of spaced apart widths of stripingmaterial and said substrate through a nip defined by the roll complex ofa roll pressure bonder and applying sufficient pressure at least at aplurality of areas across the width of said substrate corresponding tospacings between the spaced apart widths of striping material to effectbonding between each of said plurality of spaced apart widths ofstriping material and said substrate; and applying a release agent tosaid roll complex of said roll pressure bonder to prevent the rolls ofsaid roll complex from seizing said plurality of spaced apart widths ofstriping material.

10. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingwith the aid of a power driven coiler said plurality of spaced apartwidths of striping material and said substrate through a nip defined bythe roll complex of a roll pressure bonder and applying sufficientpressure at least at a plurality of areas across the width of saidsubstrate corresponding to spacings between the spaced apart widths ofstriping material to effect bonding between each of said plurality ofspaced apart widths of striping material and said substrate.

11. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingwith the aid of a power driven work roll said plurality of spaced apartwidths of striping material and said substrate through a nip defined bythe roll complex of a roll pressure bonder and applying sufficientpressure at least at a plurality of areas across the width of saidsubstrate corresponding to spacings between the spaced apart widths ofstriping material to effect bonding between each of said plurality ofspaced apart widths of striping material and said substrate.

12. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by alower work roll and a plurality of spaced apart upper work rolls; andapplying sufficient pressure at least at a plurality of areas across thewidth of said substrate corresponding to spacings between the spacedapart widths of striping material to effect bonding between each of saidplurality of spaced apart widths of striping material and saidsubstrate.

13. A method for roll pressure bonding a plurality of spaced apartstripes to a substrate comprising the steps of supplying a plurality ofspaced apart widths of striping material; supplying a substrate; guidingsaid plurality of spaced apart widths of striping material to a point ofsurface-to-surface contact with said substrate; and conjointly passingsaid plurality of spaced apart widths of striping material and saidsubstrate through a nip of a roll pressure bonder which is defined by alower work roll, a plurality of spaced apart upper work rolls and aplurality of pressure applying means, each of which is connected to oneof said plurality of upper work rolls, and applying sufficient pressureat least at a plurality of areas across the width of said substratecorresponding to spacings between the spaced apart widths of stripingmaterial to effect bonding between each of said plurality of spacedapart widths of striping material and said substrate.

1. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; heating said substrate; guiding said plurality of spaced apart widths of striping material to a point of surfaceto-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said heated substrate through a nip defined by the roll complex of a roll pressure bonder and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 2. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; heating said plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of heated spaced apart widths of striping material and said substrate through a nip defined by the roll complex of a roll pressure bonder and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 3. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; simultaneously heating and guiding said plurality of spaced apart widths of striping material with a heating guide means to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of heated spaced apart widths of striping material and said substrate through a nip defined by the roll complex of a roll pressure bonder and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 4. A method according to claim 3 wherein said plurality of spaced apart widths of striping material are simultaneously guided and heated with a heated guide roll.
 5. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a lower work roll which contacts said substrate at least at a plurality of areas throughout its width, an upper, flexible work roll which contacts said plurality of spaced aparT widths of striping material and a plurality of spaced apart backup rolls in contact with said upper work roll at spaced apart areas throughout its width; and applying sufficient pressure with said roll pressure bonder at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 6. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a lower work roll which contacts said substrate at least at a plurality of areas throughout its width, an upper, flexible work roll which contacts said plurality of spaced apart widths of striping material and a plurality of spaced apart sets of backup rolls which straddle said upper work roll at spaced apart areas throughout its width; and applying sufficient pressure with said roll pressure bonder at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 7. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a lower work roll which contacts said substrate and a relieved ring upper work roll which contacts said plurality of spaced apart widths of striping material; and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 8. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a relieved ring lower work roll which contacts said substrate and a relieved ring upper work roll which contacts said plurality of spaced apart widths of striping material; and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 9. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip defined by the roll complex of a roll pressure bonder aNd applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate; and applying a release agent to said roll complex of said roll pressure bonder to prevent the rolls of said roll complex from seizing said plurality of spaced apart widths of striping material.
 10. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing with the aid of a power driven coiler said plurality of spaced apart widths of striping material and said substrate through a nip defined by the roll complex of a roll pressure bonder and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 11. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing with the aid of a power driven work roll said plurality of spaced apart widths of striping material and said substrate through a nip defined by the roll complex of a roll pressure bonder and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 12. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a lower work roll and a plurality of spaced apart upper work rolls; and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate.
 13. A method for roll pressure bonding a plurality of spaced apart stripes to a substrate comprising the steps of supplying a plurality of spaced apart widths of striping material; supplying a substrate; guiding said plurality of spaced apart widths of striping material to a point of surface-to-surface contact with said substrate; and conjointly passing said plurality of spaced apart widths of striping material and said substrate through a nip of a roll pressure bonder which is defined by a lower work roll, a plurality of spaced apart upper work rolls and a plurality of pressure applying means, each of which is connected to one of said plurality of upper work rolls, and applying sufficient pressure at least at a plurality of areas across the width of said substrate corresponding to spacings between the spaced apart widths of striping material to effect bonding between each of said plurality of spaced apart widths of striping material and said substrate. 